Simon Maxwell Helberg (born December 9, 1980) is an American actor, comedian, and musician. He is known for playing Howard Wolowitz in the CBS sitcom The Big Bang Theory (2007–2019), for which he won the Critics' Choice Television Award for Best Supporting Actor in a Comedy Series, and as Cosmé McMoon in the film Florence Foster Jenkins (2016), for which he was nominated for the Golden Globe Award for Best Supporting Actor – Motion Picture. He has appeared on the sketch comedy series MADtv, and has appeared in films such as Old School (2003), Good Night, and Good Luck (2005), Walk Hard: The Dewey Cox Story (2007), A Serious Man (2009), and Annette (2021). He wrote, directed (along with his wife Jocelyn Towne), and starred in the film We'll Never Have Paris (2014), which is based on he and his wife's relationship.

Filmography

• 2026For Worse — Mediator
• The Audacity — Martin Phister
• Guys Next Door — Les (voice)
• Poker Face — Luca Clark
• 2023Space Oddity — Dimitry
• 2022As They Made Us — Nathan
• 2021Annette — The Accompanist
• Dug Days — Squirrel (voice)
• Elvis Goes There — Executive Producer
• 2018End of the Line — Little Man
• Young Sheldon — Howard Wolowitz (voice)
• 2016Florence Foster Jenkins — Cosmé McMoon
• 2016Paint It Black — Jeremy
• 2015Hollywood Adventures — Translator
• The Tom and Jerry Show — Napoleon (voice)
• 2014We'll Never Have Paris — Quinn, Director, Producer, Writer
• Drunk History — Frank M. Robinson
• 2013I Am I — Seth
• Kung Fu Panda: Legends of Awesomeness — Bian Zao (voice)
• 2011Let Go — Frank
• 2011The Selling — Young Husband
• Kick Buttowski: Suburban Daredevil — Ronaldo (voice)
• 2009A Serious Man — Rabbi Scott
• 2008Commentary! The Musical
• Dr. Horrible's Sing-Along Blog — Moist
• 2007Careless — Stewart
• Derek and Simon: The Show — Screenplay, Executive Producer, Creator
• 2007Evan Almighty — Staffer
• 2007Mama's Boy — Rathkon
• Reporters — Shooter #5
• The Big Bang Theory — Howard Wolowitz
• The Guild — Kevinator
• 2007The TV Set — TJ Goldman
• 2007Walk Hard: The Dewey Cox Story — Dreidel L'Chaim
• 2006Bickford Shmeckler's Cool Ideas — Al
• 2006Derek & Simon: A Bee and a Cigarette — Simon, Writer
• 2006For Your Consideration — Junior Agent
• Studio 60 on the Sunset Strip — Alex Dwyer
• The Jake Effect — Bill Skidelsky
• 2006The Pity Card — Simon, Writer, Producer
• American Dad! — Dr. Revanche (voice), Creep (voice)
• 2005Good Night, and Good Luck. — CBS Page
• Life on a Stick — Vinnie, Stan
• 2004A Cinderella Story — Terry
• Joey — Seth
• Quintuplets — Neil
• Arrested Development — Jeff
• 2003Old School — Jerry
• Reno 911! — Student Driver, Hooker Buying Son
• 2003Tracey Ullman in the Trailer Tales — Adam (DGA Trainee)
• Less than Perfect — Arthur
• 2002National Lampoon's Van Wilder — Vernon
• The Funkhousers — Donnie Funkhouser
• Undeclared — Jack
• Son of the Beach — Billy
• The Weber Show — Andy Tinker
• 1999Mumford — College Roommate
• Popular — Gus Latrine
• Sabrina, the Teenage Witch — Spokesman
• Triumph of the Will

Appearances as themselves (15)

• The Official Big Bang Theory Podcast — Self - Guest
• 2023American Symphony — Self (archive footage) (uncredited)
• 2021Baby Annette, à l'impossible ils sont tenus — Self
• 2019Unraveling the Mystery: A Big Bang Farewell — Self (archive footage)
• 2016Must See TV: An All Star Tribute to James Burrows — Self
• StarTalk with Neil deGrasse Tyson — Self
• The Late Show with Stephen Colbert — Self - Guest
• Norm Macdonald Live — Self
• Comedy Bang! Bang! — Self
• Conan — Self, Self - Guest
• Watch What Happens Live with Andy Cohen — Self - Guest
• 2007The Making of Dr. Horrible's Sing-Along Blog — Self
• The Late Late Show with Craig Ferguson — Self
• The Soup — Self
• Entertainment Tonight — Self